Nitsuko Digital System Hardware Manual For Businesscom Ds01

							Installing a Programming Terminal, SMDR printer, PC, or Modem
The AUX Module DCE 9-pin male RS-232 serial port interfaces a program-
ming terminal, SMDR printer, PC (DTE), or a modem (DCE). A DB9-DB25 
adaptor is required. DTE connection requires a straight-thru RS-232 cable. 
DCE connection requires a DCE-DCE adaptor and a straight-thru RS-232 
cable OR a null modem cable.
Note:A null modem or RS-232 cable requires DB25 connectors. Gender of
the DB25 connectors depend on the adaptor and the terminal, SMDR 
printer, or PCs serial port.
To connect a DTE programming terminal, SMDR printer, or PC:
1.Plug a DB9-DB25 adaptor into the AUX port. The DB9 must be female.
2.Connect one end of the RS-232 cable to the adaptors DB25 connector.
3.Connect the other end of the RS-232 cable to the serial port on the
programming terminal, SMDR printer, or PC. See Figure 16.
Note: When connecting a laptop PC equipped with 9-pin serial port, use
a straight-thru 9-pin RS-232 cable.
Installing a Modem
You can connect a modem to the AUX Module serial port for remote program-
ming and diagnostics.
To connect the AUX Module to a modem (DCE):
1.Plug a DB9-DB25 adaptor into the AUX port. The DB9 must be female.
2.Connect one end of the RS-232 cable to the adaptors DB25 connector.
OR 
Connect a 25-pin null-modem cable into the adaptors DB25 connector.
3.Connect the other end of the RS-232 cable to a DCE-DCE adaptor.
Skip Step #3 when using a null modem cable.
4.Connect the other end of the DCE-DCE adaptor or null modem cable to the 
modems serial port. See Figure 17.
To set the AUX serial port baud
rate (from extension 300/port 00):
1.Lift handset + press ICM.
2.Dial:  #, 0.
3.Dial a digit to select baud rate:
0 = 300, 1 = 1200, 2 = 2400
3 = 4800, 4 = 9600, 5 = 19.2KDATA FORMAT
Data bits= 8
Stop bits= 1
Baud rate=1200
Parity= none
1
2
3
4
5
6
7
8
9
FIGURE 16FIGURE 17
5. SMDR AND TERMINAL PROGRAMMING 
						

							4. BGM/MOH, PAGING, AND LOUD BELL
Installing Battery Backup (Optional)
One Valcom VPB-260 battery backup unit provides a CEU with short-term power
(2 hours - max.) during a commercial AC power failure. One per CEU max.
To install the VPB-260:
1.Mount the VPB-260 on the MDF backboard within 3 of the CEU. Follow
manufacturerÕs mounting instructions.
2.Power down the CEUÕs power supply.
3.Plug the VPB-260 3-pin female plug into the 3-pin male AUX POWER
connector on the CEU.
4.Plug the VPB-260 power cord into a dedicated 120VAC outlet.
01853L22
Do not use the
outlet dedicated to
CEU power supply. 120 V AC
Outlet To Power Supply
Battery
Backup
3 max.
Note: Follow manufacturers
          instructions when connecting
          the battery backup unit.
1 2 3+ 12 V DC
common
- 12 V DC
AUXMOHPAGND12
12
12
12
Installing External Paging or an External Relay Device (Loud Bell)
The PA terminals on the Main and Expansion #1 CEUs provide talk
paths for external paging systems. The Main CEU PA terminals are for
external zone 1. The Expansion #1 CEU PA terminals are for external
zone 2. A paging system receives internal or external pages, or Night
Audible ringing, or both. Each page system disables a line circuit: Main
CEU - line 4; Expansion CEU #1 - line 12. The AUX terminals on the
Main and Expansion #1 CEUs provide a dry contact ring relay. The relay
can be used for a loud bell, a door striker, etc.
To connect an external paging system or relay sensor:
1.Install the paging system/relay sensor per manufacturers
instructions. Caution:The paging system must not exceed the
systems paging input specifications. Some paging systems may
require the installation of a matching transformer. See Figure 15.
2.Connect the paging system to the PAterminals or the relay sensor to
the AUX terminals using station or audio cable.
3.Program External Paging/Relay Owner per the Terminal
Programming Manual (E2 + QM) or Administrators Guide
(Programs 7 + 10).
4.Install RFI suppressor beads. (Refer to RFI bead installation).
5.Power up the paging system. Make page. Adjust the paging
system for a distortion-free signal. Check relay sensor by dialing the
relay owner extension number.
FIGURE 18
FIGURE 15 
						

							6. BATTERY BACKUP AND POWER FAILURE TELEPHONES
N1853 - 32
BLKYEL REDGRNBLUWHT
BLKYEL RED
GRNBLUWHT
BLKYEL REDGRNBLU
WHT
4    3    2    1   PFT
4CO
Installing Power Failure (PF) Telephones (Optional)
The first circuit in each 4CO or 4CO/CND module (1/5, 9/13, 17/21) provides a PF
cut-through relay. Each PF relay, corresponding modular jacks, and cross-connec-
tions redirect a CO line to a 500/2500 single line telephone for full incoming\outgoing
operation during an AC power outage.
To install a PF telephone:
1.Install 3 modular jacks for each line requiring PF operation. Label jacks CO Line, 
PF Line, and PF Telephone. (The PF Line jack must be 6-conductor).
2.Connect GRN/RED from the CO Line jack to GRN/RED of the PF Line jack using 
one-pair x-connect cable. See Figure 19.
3.Connect WHT/BLU from the PF Line jack to GRN/RED of the PF Telephone jack 
using one-pair x-connect cable.
4.Connect Telcos RJ11C to the Line jack using a standard line cord.
5.Connect the PF Line jack to the 4CO modules modular connector (lines 1/5, 9/13,
17/21) using a 6-conductor line cord.
6.Connect a PF telephone to the PF Telephone jack with a standard line cord.
To test power failure cut-through at a PF telephone:
1.Power down the system.
2.Lift the handset on the PF telephone. (You should hear dial tone.) Place a call
from the PF telephone.
Installing a Music Source - Background Music or Music on Hold
A music source (radio, cassette, CD) connected to MOH terminals on
the Main CEU provides input for Background Music (BGM), or
Music on Hold (MOH), or both. MOH can be provided for CO calls only
or for CO and ICM calls. 
BGM and/or MOH for ICM calls disables the Main CEUs 4th CO line
circuit. MOH for CO calls only does not disable a line circuit. Each
Expansion CEU can have its own MOH source or use the Main CEUs.
To connect a music source:
1.Install the music source per the manufacturers instructions.
Caution:The music source output must not exceed the systems
music source input specifications. Some music sources may require
the installation of a matching transformer.
2.Connect the music source to the Main CEUs MOHterminals using
station or audio cable. Note:Bridge the music source output to an
Expansion CEUs MOH terminals, if required.
3.Program BGM and MOH per the Terminal Programming Manual
(E2 + QM) or Administrators Guide (Programs 7 and 10).
4.Install RFI suppressor beads. (Refer to RFI bead installation)
5.Power up the music source.  Activate BGM/MOH.  Adjust the music
source for a distortion-free signal.
AUXMOHPAGND12
12
12
12
FIGURE 14
FIGURE 19 
						

							3. STATION AND CO CABLING
Installing the Digital Door Box
The Digital Door Box (P/N 88545) provides one-button signaling and intercom. Up to four
Digital Door Boxes can be installed at extensions 310, 311, 322, and 323 only. Each Digital
Door Box provides a distinctive chime signal. Any keyset can receive any/all chime signals.
To install the Digital Door Box:
1.Snap open the Door Box case.
2.Punch down one end of a two-pair twisted station cable on the extension block as shown
below. 
Digital Door Boxes have the same cabling requirements as Electronic Single Line
telephones.
3.Run the station cable through the hole in the back of the Door Box. 
When wall mounting,
use the two holes in the base of the door box for the mounting screws.
4.Strip the free conductors back about 1/2 inch and connect to the Door Box terminals as
shown in Figure 20.
5.Snap the Door Box cover onto the base.
6.In E-Extensions, E3-Class of Service(or Program 18Ioption COS from the
administratorÕs telephone), assign each Door Box extension Class of Service 28. In
QV- Peripheral Ports, Door Box Alert Time(or Program 18Ioption DB from the
administratorÕs telephone), set which extensions should receive Door Box Chimes.
Refer to your Software Administrators Manual for additional programming details.
Installing the Relay Box
The Relay Box (P/N 88546) provides three normally-open relays which typically are used to
activate an electric strike door-unlock mechanism for an entrance door equipped with a
Digital Door Box. After responding to a Door Box chime signal, the user activates the relay
(opening a door) by pressing the FTR button on the telephone dialpad.
To Install the Relay Box:
1.Punch down a 4-conductor station cable to extension 309.
2.Terminate the other end of the cable to a modular jack. See Figure 21.
3.Plug in a 4-conductor line cord into the modular jack. Plug the other end into the
Relay Box.
1853 - 30A
336 (36)
337 (37)
338 (38)
339 (39)
340 (40)
341 (41)
342 (42)
343 (43)
344 (44)
345 (45)
346 (46)
347 (47) 324 (24)
325 (25)
326 (26)
327 (27)
328 (28)
329 (29)
330 (30)
331 (31)
332 (32)
333 (33)
334 (34)
335 (35) 312 (12)
313 (13)
314 (14)
315 (15)
316 (16)
317 (17)
318 (18)
319 (19)
320 (20)
321 (21)
322 (22)
323 (23) CONN
PINBLOCK
TERM.
WHT-BLU
BLU-WHT
WHT-ORN
ORN-WHT
WHT-GRN
GRN-WHT
WHT-BRN
BRN-WHTCOLOR
CODEMAIN
CEU
(INSIDE)
300 (00)
301 (01)FUNC.
TT
TR
RT
RR
TT
TR
RT
RR 1
2
3
4
5
6
7
8 26
1
27
2
28
3
29
4
30
5
31
6
32
7
33
89
10
11
12
13
14
15
16WHT-SLT
SLT-WHT
RED-BLU
BLU-RED
RED-ORN
ORN-RED
RED-GRN
GRN-REDTT
TR
RT
RR
TT
TR
RT
RR
34
9
35
10
36
11
37
1217
18
19
20
21
22
23
24RED-BRN
BRN-RED
RED-SLT
SLT-RED
BLK-BLU
BLU-BLK
BLK-ORN
ORN-BLKTT
TR
RT
RR
TT
TR
RT
RR
38
13
39
14
40
15
41
1625
26
27
28
29
30
31
32
42
17
43
18
44
19
45
2033
34
35
36
37
38
39
40
25-PAIR CABLE
N1853 -13
MAIN
CEU
(OUTSIDE)EXP.
CEU 1
(INSIDE)EXP.
CEU 1
(OUTSIDE)
TT
TR
RT
RR
TT
TR
RT
RRTT
TR
RT
RR
TT
TR
RT
RRTT
TR
RT
RR
TT
TR
RT
RRN/C
N/C 302 (02)
303 (03)
304 (04)
305 (05)
306 (06)
307 (07)
308 (08)
309 (09)
310 (10)
311 (11) BLK-GRN
GRN-BLK
BLK-BRN
BRN-BLK
BLK-SLT
SLT-BLK
YEL-BLU
BLU-YEL
YEL-ORN
ORN-YEL
YEL-GRN
GRN-YEL
YEL-BRN
BRN-YEL
YEL-SLT
SLT-YEL
VIO-BLU
BLU-VIO
VIO-ORN
ORN-VIO
VIO-GRN
GRN-VIO
VIO-BRN
BRN-VIO
VIO-SLT
SLT-VIO 41
42
43
44
45
46
47
48
49
50 46
21
47
22
48
23
49
24
50
25
360 (60)
361 (61)
362 (62)
363 (63)
364 (64)
365 (65)
366 (66)
367 (67)
368 (68)
369 (69)
370 (70)
371 (71) 348 (48)
349 (49)
350 (50)
351 (51)
352 (52)
353 (53)
354 (54)
355 (55)
356 (56)
357 (57)
358 (58)
359 (59)EXP.
CEU 2
(INSIDE)EXP.
CEU 2
(OUTSIDE)
FIGURE 13
FIGURE 12
FIGURE 20
To install a Dual ASI (contÕd.)
5.Plug one end of a 4-conductor line cord into the jack and the
other end into the Dual ASIs STA connector.
6.Plug in a line cord(s) from Dual ASIs OPX 1 and OPX 2 ports
to 2500-type device or Telcos OPX block.Note:DS01 telephones supplied with this system are hearing-aid
compatible. Refer to Nitsuko Americas Standard Practices Manual
for FCC Hearing-Aid Compatible application requirements. 
						

							Operation
To activate relays from a multibutton set:
1.Lift handset to answer the Door Box chimes. 
If you have a Door Box Hotline or Call Coverage key, you can press it
instead.
OR
Place call to Door Box.
You can press Intercom and dial the Door Box extension number. You can 
also press your Door Box Hotline or Call Coverage key (if you have one).
2.Talk to the visitor at the door.
3.Press and hold FTR.
The relay activates as long as you hold down the FTR key
(up to 60 seconds).
4.Hang up when you are through.
To activate relays from a single line set:
1.Lift handset to answer the Door Box chimes.
OR
Place call to Door Box (i.e., dial Door Box extension number).
2.Talk to the visitor at the door.
3.Dial *.
Do not hold down the * key. The relay activates for six seconds and then
automatically releases.
4.Hang up when you are through.
Programming Notes:At
extension 309, set E2-
Circuit Type to X. Set E3-
Class of Service to 28.
At each extension that
should activate the strike: In
QV-Peripheral Ports (Alert
Programming), 
enable Alert for each Door
Box. If an extension
receives chimes, it can acti-
vate the associated 
Relay Box strike.
N1853 - 31
37
38
39
40TT
TR
RT
RRWhite/Blue
Blue/White
White/Orange
Orange/White
CO Line Installation
A modular line cord is required to connect Telcos RJ11C CO line
interface to a 4CO or 4CO\CND module. See Figure 7.
To connect a CO line to a 4CO or 4CO\CND module:
1.Plug one end of a modular line cord into a Telco RJ11C jack.
2.Insert the line cords other end into the desired modular connector
on a 4CO or 4CO\CND module.
Installing Stations
Station connection for each extension requires two-pair twisted
station cable and a 4-conductor modular jack. See Figure 11.
Install a Dual ASI (any CEU) and DSS console (Main CEU only) to
an even-numbered port (except port 00). Leave the next-highest
adjacent odd-numbered port unterminated. See Figure 12. 
Note:Single and Dual ASIs cannot be installed in ports 68-71.
To install a multibutton telephone, single port ASI, Electronic
Single Line telephone, or DSS console:
1.Install 625 modular jack within 6 feet of each extension.
2.Punch down 2-pair twisted station cable to desired extension
on cross-connect block. See Figure 13 for cutdown.
3.Terminate the other end of the station cable at each modular jack.
4.Plug the extensions line cord into the modular jack.
FIGURE 21
FIGURE 11
(RT) BLK
(RR) YEL
GRN(TR) RED
01853L17
 (TT) GRNRED
YELBLKBLU-WHT ORN-WHTWHT-ORNWHT-BLU
Note:Refer to the Data Products Manual to install a Data Module.
Refer to the 12SCU/PCU Installation and Programming Instructions
when connecting a 500/2500 type device to a 12SCU/PCU module.
To connect the station block and cross-connect block:
1.Punch down 25-pair cable to station block.
2.Plug female connector end of 25-pair cable into Station Module.
3.Use x-connect to bridge station block to cross-connect block.
Note:DS01 telephones have electret-type handsets. For headset
operation, use Plantronics Supra Star Mate (model # MH0503-1)
or an equivalent electret-compatible headset.
To install a Dual ASI:
1.Ground Dual ASI to earth ground using 14AWG ground wire.
2.Punch down 2-pair twisted station cable to an even-numbered
port on station block. Install bridging clips as shown in Figure 12.
3.Jumper to adjacent ports B pair using one-pair x-connect.
4.Terminate the other end of the station cable to a modular jack.
7. DOOR BOX AND RELAY BOX 
						

							Installing AUX, SAUX, and XAUX Modules
A minimum of 7 clearance is required on the right side of a
CEU to install an AUX/SAUX/XAUX.  Power down to install or
remove an AUX/SAUX/XAUX module or an 8-pin line cord.
Note:Initialization is not required to add an AUX to a system
running on CEU base software. The numbering plan, however,
changes automatically for lines, extensions, and ring groups.
To install an AUX, SAUX, and XAUX Module:
1.Remove cover plate.
2.Close CEU ejector tabs and insert the AUX into the CEU
upper and lower rails.
Push the module in until it clears
the CEU ejector tabs. See Figure 8.
3.Open ejector tabs. Locate ribbon cable over connector.
4.Push in the module until it seats firmly into the CEU.
5.Push ribbon cable connector until firmly seated. The CEU 
ejector tabs close. Tighten module screws (2).
To install AUX, SAUX, and XAUX line cords:
1.Install line cords. Two CEUs: AUX-SAUX 6 line cord; three
CEUs: AUX-XAUX 3 line cord & XAUX-SAUX 6 line
cord. See Figure 10.
Note:AUX terminal program passwords: ONYXVSK, if AUX
is installed in a working system, but not initialized; DS01H, if
initialized with AUX installed.
CEU Specifications:LinesStations
Main CEU824
Expansion CEU #1824
Expansion CEU #2824
Total2472
System Capacity:
Power Failure Cut-Through Circuit1 per CO Module
Talk Timeslots (Intercom/lines)Non-blocking
DTMF Tone Duration (manual dial)256 ms on/128 ms off
DTMF Tone Duration (speed dial)128 ms on/128 ms off
Internal Page Zones7 (and all-call)
External Page Zones1 output per Main & Exp.CEU #1
External Control Relay Circuits1 set of contacts per Main & Exp. CEU #1
Electrical Specifications:
AC Input:
115 V AC +/- 10% @ 57-63 Hz, Dedicated 15 A circuit.
Grounding Requirements:
Copper wire, continuous, No. 14 AWG, or larger.
Power Requirements:
75-100VA maximum (per CEU) - Refer to power supply label.
Heat Dissipation:
256 BTU per CEU
AUX Relay Contact Rating:External Zone Paging:
Max. Load: 60 mA @ 30 V DCOutput Impedance: 600 OHMS
10 mA @ 90 V ACMax. Output: +3 dBm
Maximum Initial Contact Resistance:
50 m OHMS
Background Music\Music on Hold:
Input Impedance: 100 K OHMS
Maximum Input: -10 dBm
Cable Requirements:From CEU to Keysets or ASI:
Four-conductor (two-pair twisted station cable)
1,500 feet w/No. 26 AWG
2,000 feet w/No. 24 AWG
2,500 feet w/No. 22 AWG
From ASI to connected OPX device:
100 feet using 22 AWG four-conductor.
Use 25-pair cables with Type 57 female connectors to connect to Station Modules.
Use four conductor modular line cords to connect to CO Modules.
Use multiconductor riser cables to an Intermediate Distribution Frame (IDF) 
when required.
FIGURE 9
FIGURE 10
FIGURE 8
01853L13
Thumb Screw
Thumb ScrewRibbon
Cable
2. STATION, CO AND AUX/SAUX/XAUX MODULES 
						

							8. SPECIFICATIONS
Mechanical Specifications
WidthHeightDepthWeight
CEU14 5/169 1/433 lb, 11 oz
39.2 cm23.7 cm7.6 cm1.7 kg
CO Module6 3/46 3/41 1/21 lb
17.1 cm17.1 cm3.8 cm.5 kg
Station Module6 3/46 3/41 1/21 lb
17.1 cm17.1 cm3.8 cm.7 kg
Power Supply2 13/1652 3/43 lbs
7.2 cm12.7 cm7.0 cm1.4 kg
Keysets 3 1/27 1/210 1/82.7 lb
8.9 cm19.1 cm25.8 cm1.3 kg
NOTE:Weight of CEU is with modules not installed.
Environmental Specifications
Refer to the Standard Practices Manual (P/N N2710STD01).
FCC Registration Information
Model:DS01
Manufacturer:Nitsuko America
Load number (DOC)20
FCC Part 15 Registration:Class A
Sample FCC Registration Number:1ZDTHA-65325-MF-E*Total load per CEU not to exceed 24.
Facility
USOCJackREN/ServiceInterface
Type of InterfaceConnectorCodeCode
2-Wire LoopRJ11C2.5B02LS2
Installing CO and Station Modules
Power down to install or remove any module. 
To install CO and Station Modules:
1.Line up the screw hole in the new module (i.e., the one you
are installing) with the pilot hole in the CEU base or existing
module. See Figure 5.
2.Place new module on CEU or existing module. If placing new
module on existing module, be sure to line up the ground lugs.
3.When placing new module on CEU, insert short screw through
new module and into CEU base. Tighten screw.
ORWhen placing new module on existing module, insert long
screw through new module and into CEU base. Tighten screw.
4.Insert the ribbon cable into the desired connector on the CEU:
(a) inside modules ribbon cable plugs into the outside
connector (b) outside modules ribbon cable plugs into the
inside connector.FIGURE 5CEUPositionExtensionsPCULines
Main1 (inside)300-3113681-4
Main2 (outside)312-3233695-8
Expansion #11 (inside)324-3353709-12
Expansion #12 (outside)336-34737113-16
Expansion #21 (inside)348-35917-20
Expansion #22 (outside)360-37121-24FIGURE 6
FIGURE 7
01853L16
300-311
312-323 #1 (inside)
#2 (outside)
ItemLoad Factor*Circuit TypeNotes
Display keyset1021 port, auto-ID
DSS console2062 port, auto-ID
Dual-ASI3512 port, no auto-ID
Standard keyset1011 port, auto-ID
ASI1511 port, no auto-ID
ESL1001 port, auto-ID
Door Box1X310/311/322/323 only
Relay Box1XInstalled at 309 only
Relay for 310 cannot be used
Data Module1011 port, no auto-IDLoad Factor Table
01853L12A
01853L15
1 2 3
4
5 6 7
8
#1 (inside)
#2 (outside) 
						

							DescriptionPart Number
Common Equipment
Power Supply.............................................................................................................60001
CEU - (includes: 1 Common Equipment Unit base + 1 - 60001 + RFI beads,
no modules)................................................................................................................88600
4x12 Kit (no phones):.................................................................................................88601
1 - 88600 (includes: 1 - CEU + 1 - 60001 + RFI beads)
1 - 88511 4 CO Module, 1 - 88521 12 Station Module (digital)
4x12 Kit (8 phones):...................................................................................................88691
1 - 88601 (includes: 1 - 88600 + 88511 + 88521 + RFI beads)
1 - 88663 HF Display Telephone, 7 - 88661 HF Telephones
12x36 Kit (10 phones):...............................................................................................88692
2 - 88601 (includes: 1 - 88600 + 88511 + 88521 + RFI beads)
1 - 88511 4 CO Module
1 - 88521 12 Station Module
1 - 88625 AUX Module
1 - 88529 SAUX Module (includes: 1 - 88587 6 8-conductor cable)
2 - 88663 HF Display Telephones
8 - 88661 HF Telephones
Modules
4 CO Module..............................................................................................................88511
4 CO Caller ID Module...............................................................................................88512
12 Station Module (digital)..........................................................................................88521
AUX Module...............................................................................................................88625
SAUX Module (includes: 1 - 88587 6 8-conductor cable)..........................................88529
XAUX Expansion AUX Module (includes: 1 - 88588 3 8-conductor cable)................88526
12SCU/VMU Voice Module Unit (12 stations + 3 VMU ports)....................................88522
12SCU/PCU Peripheral Control Unit Module (12 stations + 2 - 2500 circuits)...........88530
AUX/SAUX Kit:...........................................................................................................88695
1 - 88625 AUX Module
2 - 88529 SAUX Module (includes: 1 - 88587 6 8-conductor cable)
Software
CEU base software upgrade - latest release - (2 IC chips)........................................88608
AUX module software upgrade - latest release - (2 IC chips)....................................88628
SAUX/XAUX module software upgrade - latest release (1 IC chip)...........................88589
Upload/Download Program - (1 floppy disk)...............................................................88217
Station Equipment
16 Button Non-HF Telephone (Taupe).......................................................................88660
16 Button HF Telephone (Taupe)...............................................................................88661
16 Button HF Display Telephone (Taupe)..................................................................88663
16 Button Non-HF Telephone (Graphite)...................................................................88670
16 Button HF Dual LED Telephone (Graphite)...........................................................88671
16 Button HF Display Dual LED Telephone (Graphite)..............................................88673
Digital Single Line Telephone (Taupe).......................................................................88650
Digital Single Line Telephone (Graphite)....................................................................88676
Mounting the Power Supply
1.Use powersupply as template to locate mounting
screw holes.
2.Drill holes (2) in backboard using a 1/8Ó drill bit.
3.Locate power supply over holes.
4.Install screws (2-not provided).
Connecting the Power Supply to the CEU
1.Loop the power supply CEU power cord 3 times
through aferrite bead (supplied in box).
2.Plug in the power supply CEU power cord into the 
MAIN POWERconnector on the CEU. See Figure 3.
Do not plug the power supply into an AC outlet.
Power Strip/Surge Protector Connections
1.Plug the power supply cord into a power strip.
2.Plug the power strip into an AC surge protector.
3.Plug the surge protector into a dedicated AC outlet.
Powering Up
1.Turn the power switch on the power strip ON.
Refer to Power Up Procedure below (see Figure 4) for
proper sequence when not using a power strip.
2 CEUÕs3 CEUÕs
1. Exp. CEU (SAUX)1. Exp. CEU #2 (XAUX)
2. Exp. CEU (AUX)2. Exp. CEU #1 
(SAUX)
3. Main CEU (AUX)
FIGURE 2FIGURE 3FIGURE 4
1. CEU AND POWER SUPPLY 
						

							9. PARTS LIST
CEU/Power Supply Site Requirements
Choose a central site for the MDF plywood backboard, with-
in 7Õ of a dedicated AC outlet and 25Õ of earth ground.
Allow space for multiple CEUÕs and power supplies. CEUÕs
must be located within 3Õ of each other. Power supplies
must be located within  6Õ of  the CEU and within 6Õ of a
dedicated AC outlet. See Figure 1.
Allow space for telco and station connectors, all ancillary
equipment (ie; BGM/MOH source, voice mail, external pag-
ing equipment), and expansion. Refer to NitsukoÕs Standard
Practices Manual (P/N N2710STD01) for general environ-
ment and site specifications.
Mounting the CEU
1.Locate CEU mounting screws. Drillholes (2) in
backboard using a 1/8Ó drill bit. Refer to mounting
dimensions in Figure 2 (or use template, if installed). 
2.Install CEU mounting screws (2) in holes. See Figure 2.
Use screw gauges to set proper screw depth.
(Screws & gauges are in plastic packet). 
3.Hang CEU on mounting screws.
4.Drill lower CEU screw hole using a 1/8Ó drill bit.
See Figure 2. Install and tighten screw.
5.Ground each CEU using #12 AWG (or larger) 
ground wire to earth ground.
FIGURE 1
DescriptionPart Number
Other Station Equipment
DSS Console (Taupe)................................................................................................88655
DSS Console (Graphite).............................................................................................88675
Digital Door Box..........................................................................................................88545
Relay Box...................................................................................................................88546
ASI - Analog Station Interface (single port w/DTMF receiver)....................................88749
Dual Port ASI (dual port w/DTMF receivers)..............................................................88750
Wall Mount Kit (Taupe)...............................................................................................88679
Wall Mount Kit (Dark Gray).........................................................................................88779
Wall Mount Hanger.....................................................................................................88680
Data Products
Data Module...............................................................................................................88400
Dataport PCB.............................................................................................................88460
Modem Pooling PCB..................................................................................................88465
Mini Data Unit.............................................................................................................89408
Mini Data Unit Power Supply......................................................................................89409
DCE-DCE Adaptor......................................................................................................89079
Replacement Parts
K1 Handset (Taupe)...................................................................................................88685
K1H Handset (Dark Gray)..........................................................................................88775
Handset Cord (6 foot)..............................................................................................88685-6
Handset Cord (9 foot)..............................................................................................88685-9
Handset Cord (13 foot)..........................................................................................88685-13
Line Cord (7 foot)....................................................................................................88686-7
Line Cord (14 foot)................................................................................................88686-14
Line Cord (25 foot)................................................................................................88686-25
8-conductor 6 cable (AUX-SAUX w/2CEUs or SAUX-XAUX w/3 CEUs).................88587
8-conductor 3 cable (AUX-XAUX w/3 CEUs)............................................................88588
Installation Equipment
Plywood Backboard
1
66M1-50 connecting block(s)
1
25-pair cable(s)
1
22/24 AWG 4-conductor twisted-pair station cable
1
Cross-connect wire
1
Bridging clips
1
Modular jack (1 per station)
1
Modular line cords (1 per CO line)
1
Ground wire (1 per CEU)
1
RJ11C Telco interface (1 per CO line)
1
AC surge protector (1 per CEU)
1
1
Item not supplied by Nitsuko America. 
						

							9. PARTS LIST
CEU/Power Supply Site Requirements
Choose a central site for the MDF plywood backboard, with-
in 7Õ of a dedicated AC outlet and 25Õ of earth ground.
Allow space for multiple CEUÕs and power supplies. CEUÕs
must be located within 3Õ of each other. Power supplies
must be located within  6Õ of  the CEU and within 6Õ of a
dedicated AC outlet. See Figure 1.
Allow space for telco and station connectors, all ancillary
equipment (ie; BGM/MOH source, voice mail, external pag-
ing equipment), and expansion. Refer to NitsukoÕs Standard
Practices Manual (P/N N2710STD01) for general environ-
ment and site specifications.
Mounting the CEU
1.Locate CEU mounting screws. Drillholes (2) in
backboard using a 1/8Ó drill bit. Refer to mounting
dimensions in Figure 2 (or use template, if installed). 
2.Install CEU mounting screws (2) in holes. See Figure 2.
Use screw gauges to set proper screw depth.
(Screws & gauges are in plastic packet). 
3.Hang CEU on mounting screws.
4.Drill lower CEU screw hole using a 1/8Ó drill bit.
See Figure 2. Install and tighten screw.
5.Ground each CEU using #12 AWG (or larger) 
ground wire to earth ground.
FIGURE 1
DescriptionPart Number
Other Station Equipment
DSS Console (Taupe)................................................................................................88655
DSS Console (Graphite).............................................................................................88675
Digital Door Box..........................................................................................................88545
Relay Box...................................................................................................................88546
ASI - Analog Station Interface (single port w/DTMF receiver)....................................88749
Dual Port ASI (dual port w/DTMF receivers)..............................................................88750
Wall Mount Kit (Taupe)...............................................................................................88679
Wall Mount Kit (Dark Gray).........................................................................................88779
Wall Mount Hanger.....................................................................................................88680
Data Products
Data Module...............................................................................................................88400
Dataport PCB.............................................................................................................88460
Modem Pooling PCB..................................................................................................88465
Mini Data Unit.............................................................................................................89408
Mini Data Unit Power Supply......................................................................................89409
DCE-DCE Adaptor......................................................................................................89079
Replacement Parts
K1 Handset (Taupe)...................................................................................................88685
K1H Handset (Dark Gray)..........................................................................................88775
Handset Cord (6 foot)..............................................................................................88685-6
Handset Cord (9 foot)..............................................................................................88685-9
Handset Cord (13 foot)..........................................................................................88685-13
Line Cord (7 foot)....................................................................................................88686-7
Line Cord (14 foot)................................................................................................88686-14
Line Cord (25 foot)................................................................................................88686-25
8-conductor 6 cable (AUX-SAUX w/2CEUs or SAUX-XAUX w/3 CEUs).................88587
8-conductor 3 cable (AUX-XAUX w/3 CEUs)............................................................88588
Installation Equipment
Plywood Backboard
1
66M1-50 connecting block(s)
1
25-pair cable(s)
1
22/24 AWG 4-conductor twisted-pair station cable
1
Cross-connect wire
1
Bridging clips
1
Modular jack (1 per station)
1
Modular line cords (1 per CO line)
1
Ground wire (1 per CEU)
1
RJ11C Telco interface (1 per CO line)
1
AC surge protector (1 per CEU)
1
1
Item not supplied by Nitsuko America.